{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["spouse", "members", "city of headquarters", "origin"], "input": "These are : In December 2007 Vivartia was found guilty of colluding with other milk producers (  Fage  Mevgal and Olympos ) to fix milk prices in  Greece  to the disadvantage of the consumer ."}
{"spouse": [], "members": [], "city of headquarters": [], "origin": []}